A plastic bag was floating in the water.

一个塑料袋在水中漂浮。

《牛津词典》

He tied the ends of the plastic bag together.

他把塑料袋的两头系在一起。

《柯林斯英汉双解大词典》

Because I don't use plastic bag!

因为我不使用塑料袋！

youdao

Then cover the top of the pot with a see-through plastic bag.

VOA: special.2011.04.26

The astronauts made the connector from a plastic bag, cardboard and tape.

VOA: special.2009.07.22

Store the unused part in the refrigerator in a plastic bag.

VOA: special.2009.04.28

He had been standing on it the whole time, holding a plastic bag full of clothes.

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Frist sealed the egg in a plastic bag and stuck it in her fridge.

WSJ: Big Chocolate Eggs May Be Big, but Big Hen's Eggs Not So Much

This may be because it sounds like it was recorded inside a plastic bag.

BBC: David Bowie